31.40CX331adwe

Lexmark CX331adwe error 31.40: How to Clear Paper Jams

The Lexmark CX331adwe error 31.40 indicates a specific paper feed obstruction. This error forces the machine to halt to prevent damage. Clearing 31.40 paper jam in CX331adwe is a common maintenance task that helps extend the lifespan of your office equipment.

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Common causes

  • 1Poor quality or damp paper.
  • 2Dust buildup on optical paper sensors.
  • 3Worn-out rubber pickup rollers.
  • 4Overfilled paper tray.

Solutions

Quick Diagnosis

If you see 31.40, a sheet is stuck inside the main printing area. Open the front door and inspect the transfer path. Often, you will find small bits of paper stuck in the rollers.

Step-by-Step Solution

  1. Open Front Door: Lower the main access panel.
  2. Remove Consumables: Take out the toner and imaging unit.
  3. Clear Path: Remove all jammed sheets in the direction of the paper flow.
  4. Reinstall: Reinsert the consumables and close the unit.

Prevention and Maintenance

Use high-quality dry paper. Clean the pickup rollers with a lint-free cloth monthly to maintain grip.

When to Call a Technician

If the jam is cleared but the 31.40 error remains, a sensor could be dirty or the exit flag might be broken.

Technical Specs

Steps to follow

  1. 1

    Open Front Door

    Open the front cover and pull out the toner and imaging unit.

  2. 2

    Locate Jam

    Visually inspect the paper path and remove any jammed pieces.

  3. 3

    Reinstall Consumables

    Place the cartridges back, ensuring they are fully seated.

  4. 4

    Reset

    Close the cover; the printer will automatically reset.

Frequently asked questions

It indicates a paper jam located within the toner or imaging unit area.

Yes, but pull slowly and avoid sharp tugs to prevent damaging the sensitive imaging drum.

High humidity makes paper damp and sticky, significantly increasing the chance of feeding jams.

Keep the paper tray guides flush against the paper stack and clean the pickup rollers regularly.